Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/port/browser/render_widget_host_view_port.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_PORT_H_
 #define CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_PORT_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 97 matching lines @@
   // Informs that the focused DOM node has changed.
   virtual void FocusedNodeChanged(bool is_editable_node) = 0;
 
 #if defined(OS_MACOSX) || defined(USE_AURA)
   // Updates the range of the marked text in an IME composition.
   virtual void ImeCompositionRangeChanged(
       const gfx::Range& range,
       const std::vector<gfx::Rect>& character_bounds) = 0;
 #endif
 
-  // Informs the view that a portion of the widget's backing store was scrolled
-  // and/or painted.  The view should ensure this gets copied to the screen.
-  //
-  // If the scroll_rect is non-empty, then a portion of the widget's backing
-  // store was scrolled by dx pixels horizontally and dy pixels vertically.
-  // The exposed rect from the scroll operation is included in copy_rects.
-  //
-  // There are subtle performance implications here.  The RenderWidget gets sent
-  // a paint ack after this returns, so if the view only ever invalidates in
-  // response to this, then on Windows, where WM_PAINT has lower priority than
-  // events which can cause renderer resizes/paint rect updates, e.g.
-  // drag-resizing can starve painting; this function thus provides the view its
-  // main chance to ensure it stays painted and not just invalidated.  On the
-  // other hand, if this always blindly paints, then if we're already in the
-  // midst of a paint on the callstack, we can double-paint unnecessarily.
-  // (Worse, we might recursively call RenderWidgetHost::GetBackingStore().)
-  // Thus implementers should generally paint as much of |rect| as possible
-  // synchronously with as little overpainting as possible.
-  virtual void DidUpdateBackingStore(
-      const gfx::Rect& scroll_rect,
-      const gfx::Vector2d& scroll_delta,
-      const std::vector<gfx::Rect>& copy_rects,
-      const std::vector<ui::LatencyInfo>& latency_info) = 0;
-
   // Notifies the View that the renderer has ceased to exist.
   virtual void RenderProcessGone(base::TerminationStatus status,
                                  int error_code) = 0;
 
   // Tells the View to destroy itself.
   virtual void Destroy() = 0;
 
   // Tells the View that the tooltip text for the current mouse position over
   // the page has changed.
   virtual void SetTooltipText(const base::string16& tooltip_text) = 0;
@@ skipping 198 matching lines @@
 
   // Returns an HWND that's given as the parent window for windowless Flash to
   // workaround crbug.com/301548.
   virtual gfx::NativeViewId GetParentForWindowlessPlugin() const = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_PORT_H_